condition	mean	min	max
4 h after light	7.451663333333333	7.3105199999999995	7.671060000000001
8 h after light	7.63512	7.4625	7.73929
12 h after light	7.608266666666666	7.49797	7.691739999999999
4 h after dark	7.69752	7.54829	7.77941
8 h after dark	7.60015	7.42943	7.78149
12 h after dark	7.798003333333333	7.64595	7.996919999999999